East coast fever immunisation trials in Uganda: Field exposure of zebu cattle immunized with three isolates ofTheileria parva

Robson, J.; Pedersen, Viki Møller Lyngby; Odeke, G. M.; Kamya, E. P.; Brown, C.G.D.

doi:10.1007/bf02240343

Cited by 21 publications

(3 citation statements)

References 11 publications

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“…This high prevalence may be due either to a high and continuous challenge with T. mutans and T. velifera or the fact that these species are carried for longer periods of time at high levels after infection. It is generally considered that T. mutans and T. velifera are non-pathogenic in cattle, however an immunisation study carried out in Uganda (Robson et al, 1977) showed that, despite high levels of protection against ECF, zebu cattle still died during field trials if other tick-borne diseases were not also controlled. Field trials have also shown that T. mutans may cause severe anaemia and death in susceptible cattle (Snodgrass et al, 1972;Irvin et al, 1972).…”

Section: Discussionmentioning

confidence: 98%

Haemoparasite prevalence and Theileria parva strain diversity in Cape buffalo (Syncerus caffer) in Uganda

Oura

Tait

Asiimwe

et al. 2011

Veterinary Parasitology

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Section: Discussionmentioning

confidence: 98%

Haemoparasite prevalence and Theileria parva strain diversity in Cape buffalo (Syncerus caffer) in Uganda

Oura

Tait

Asiimwe

et al. 2011

Veterinary Parasitology

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“…the time of death, may vary between the TBDs. Several studies have found the time of death for ECF-infected cattle to be around 26 days, with ranges from 11 to 44 days (Brocklesby, 1962; Radley et al ., 1974; Robson et al ., 1977). For anaplasmosis, the time of death is currently unknown.…”

Section: Discussionmentioning

confidence: 99%

Associations between monthly rainfall and mortality in cattle due to East Coast fever, anaplasmosis and babesiosis

et al. 2020

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Weather conditions can impact infectious disease transmission, causing mortalities in humans, wild and domestic animals. Although rainfall in dry tropical regions is highly variable over the year, rainfall is thought to play an important role in the transmission of tick-borne diseases. Whether variation in rainfall affects disease-induced mortalities, is, however, poorly understood. Here, we use long-term data on monthly rainfall and Boran cattle mortality (1998–2017) to investigate associations between within-year variation in rainfall and cattle mortalities due to East Coast fever (ECF), anaplasmosis and babesiosis in Laikipia, Kenya, using ARIMAX modelling. Results show a negative correlation between monthly rainfall and cattle mortality for ECF and anaplasmosis, with a lag effect of 2 and 6 months, respectively. There was no association between babesiosis-induced mortalities and monthly rainfall. The results of this study suggest that control of the tick-borne diseases ECF and anaplasmosis to reduce mortalities should be intensified during rainy periods after the respective estimated time lags following dry periods.

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“…the time of death, may vary between the TBDs. Several studies have found the time of death for ECF-infected cattle to be around 26 days, with ranges from 11 to 44 days (Brocklesby 1962, Radley et al 1974, Robson et al 1977. For Anaplasmosis, the time of death is currently unknown.…”

Section: Discussionmentioning

confidence: 99%

Connecting divergent worlds : Social and ecological factors influence tick-borne diseases in tropical drylands

Chepkwony¹

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Weather conditions can impact infectious disease transmission, causing mortalities in humans, wildlife and livestock. Although rainfall in dry tropical regions is highly variable over the year, rainfall is thought to play an important role in the transmission of tick-borne diseases. Whether variation in rainfall affects diseaseinduced mortalities is, however, remains poorly understood. Here, we use longterm data on monthly rainfall and Boran cattle mortality (1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016)(2017) to investigate associations between within-year variation in rainfall and cattle mortalities due to East Coast Fever (ECF), Babesiosis and Anaplasmosis in Laikipia, Kenya, using ARIMAX modelling. Results show a negative correlation between monthly rainfall and cattle mortality for ECF and Anaplasmosis, with a lag effect of 2 and 6 months, respectively. There was no association between Babesiosisinduced mortalities and monthly rainfall. The results of this study suggest that control of the tick-borne diseases ECF and Anaplasmosis should be intensified during the dry season to reduce mortalities.

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East coast fever immunisation trials in Uganda: Field exposure of zebu cattle immunized with three isolates ofTheileria parva

Cited by 21 publications

References 11 publications

Haemoparasite prevalence and Theileria parva strain diversity in Cape buffalo (Syncerus caffer) in Uganda

Haemoparasite prevalence and Theileria parva strain diversity in Cape buffalo (Syncerus caffer) in Uganda

Associations between monthly rainfall and mortality in cattle due to East Coast fever, anaplasmosis and babesiosis

Connecting divergent worlds : Social and ecological factors influence tick-borne diseases in tropical drylands

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